MA 201 - Math for Elementary TeachersExam 3November 21 2006Name:Score: /100 Points1Instructions:• You may not use any outside assistance on this exam. You may not use books,notebooks, other people’s exams, or any other materials to cheat on this exam.• You may not use a graphing calculator on this exam.• The use of electronic equipment such as mp3 players, ipods, cell phones andother electronic devices (besides your calculator) during the exam is prohibited.• If you are caught cheating on the exam, you will be given a 0 for a grade.• Write clearly during the exam and fully erase or mark out anything you do notwant graded.• You must show all your work to recieve full credit unless otherwisestated.21. Compute the following operations in Q using the desired model. (5 points each)• Using the area model, determine96−56.• Using fractions strips, determine75−35.32. Using your favorite technique write the fraction208−272in the simplest form. (8points.)3. To become an elementary school teacher in Kentucky, you have to travel tothe far away planet Chilkat and teach elementary school there for a year. Onplanet Chilkat the days are 30 hours long as opposed to the 24 hour days here onEarth. Complete the following computations if possible, if not write undefinedand give justification why, (3 points each):• 22 +3019• 8 −3015• 11 ×3011• 10 ÷30244. Using color counters and showing pictures, explain how you would demonstratethe calculations 7 − 4 and 7 + (−3). Be sure to define what your countersrepresent. (10 points)55. Determine equivalent fractions with the least common denominator for the ra-tional numbers:310,421. (10 points)6. Show using the area model of multiplication that35∗47=2035. Be sure to give anexplanation of your model. (10 points)67. Using any conceptual method solve the following word problem in Q. Be sureto explain your work.Leonardo, Raphael, and Donatello found 812pizzas in the back of their refriger-ator and do not want to share them with their annoying brother Michaelangelo.They decide to carry them to a nearby park bench to eat them and they wantto share the load equally. How many pizzas should each of them carry? (10points)78. Using a number line model, demonstrate the addition27+67and give the correctanswer. Remember to explain your mo del. (10 points.)9. Order the rational numbers below from least to greatest using the sign, <:−3−8,47,−2936,5−6. (10 points)810. Your student Fry computes the following addition for you in Q:36+49=715.Is Fry correct or incorrect. If correct explain why using fraction strips. Ifincorrect show, again using fraction strips, how the student erred and give thecorrect solution. (10 points)911. Extra Credit:Complete the following arthimetic problem in Q. Be sure to explain all yourwork. (5 points
View Full Document
Unlocking...